Wilson D B, Christensen E
Acta Anat (Basel). 1982;114(3):259-67. doi: 10.1159/000145595.
The pars distalis of the pituitary gland was studied by means of electron microscopy in 14- to 18-day dwarf embryos (dw/dw) obtained from matings of dwarf homozygotes in which reproductivity was induced by hormone supplementation and pituitary transplants to the renal capsule. At 14 days of gestation the dwarf pars distalis shows fewer granulated cells than in the normal. Although somatotroph-like and mammotroph-like cells are identifiable in the normal pars distalis as early as 15 days, comparable cells are not present in the dwarf. By 17 and 18 days, the dwarf exhibits an ambiguous cell-type with a combination of somatotroph and mammotroph characteristics. At 18 days the dwarf also continues to show numerous nongranulated cells with large aggregates of glycogen, whereas in the normal pars distalis comparable glycogen-containing cells are relatively scarce.
通过电子显微镜对14至18天龄的侏儒胚胎（dw/dw）的垂体远侧部进行了研究，这些胚胎来自侏儒纯合子的交配，通过激素补充和将垂体移植到肾被膜来诱导繁殖。在妊娠14天时，侏儒垂体远侧部的颗粒细胞比正常情况下少。虽然在正常垂体远侧部中，早在15天时就可识别出促生长激素细胞样和促乳激素细胞样细胞，但侏儒中没有类似的细胞。到17天和18天时，侏儒表现出一种具有促生长激素细胞和促乳激素细胞特征组合的模糊细胞类型。在18天时，侏儒还继续显示出许多含有大量糖原聚集体的无颗粒细胞，而在正常垂体远侧部中，类似的含糖原细胞相对较少。
